The opposition Armenian National Congress, an alliance of opposition political parties and groups headed by former Armenian President Levon ter-Petrossyan, has petitioned the Armenian Constitutional court asking that the results of the 6 May elections according to the proportional system be annulled because of election irregularities. Earlier several ANC candidates had also addressed the court with similar appeals for cancelling the results of the elections in a number of single seat majoritarian elections. The President of the Constitutional Court has asked judges to review the cases, according to a court spokesperson.